From the FAQ link, it does not mention which Basic Profile version will be tested on the exam.
Which one should I study for version 1.0/1.1/1.2/2.0?
I guess there may be some questions about Basic Profile 1.1 compliant.
posted 3 years ago
I think, WS-I BP 1.0 would be fine. You can also read WS-I BP 1.1 - but they very similar in those areas which tested on exam.
Definetely not WS-I BP 2.0.
Java Platform, Enterprise Edition 6 Web Services Developer Certified Expert Exam Study Guide and Quiz Exam 1Z0-810: Upgrade to Java SE 8 Programmer Study Guide and Quiz